#1D3C8E#1D3C8E

#1D3C8E is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.6% C 0.141 H 264.8°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#1D3C8E
RGB	rgb(29, 60, 142)
HSL	hsl(224, 66%, 34%)
HSV	hsv(224, 80%, 56%)
CMYK	cmyk(79.6%, 57.7%, 0%, 44.3%)
CIE-LAB	lab(27.97, 20.10, -48.70)
CIE-LCH	lch(27.97, 52.69, 292.43°)
OKLab	oklab(38.63% -0.0128 -0.1405)
OKLCH	oklch(38.63% 0.141 264.8)
XYZ	xyz(7.0033, 5.4451, 26.2679)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3C8E #8E6F1D

analogous

#1D748E #1D3C8E #361D8E

triadic

#1D3C8E #8E1D3C #3C8E1D

tetradic

#1D3C8E #8E1D74 #8E6F1D #1D8E36

square

#1D3C8E #8E1D74 #8E6F1D #1D8E36

split-complementary

#1D3C8E #8E361D #748E1D

monochromatic

#081128 #13275B #1D3C8E #2751C1 #4B72DA

Accessibility & contrast

On white

10.05

#1D3C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1D3C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3C8E

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3C8E	#FFFFFF	#000000	##FFFFFF
##1D3C8E	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004791

Deuteranopia (green-blind)

#003D8C

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d3c8e;
/* rgb */ color: rgb(29, 60, 142);
/* oklch */ color: oklch(38.6% 0.141 264.8);

Tailwind

colors: {
  custom: {
    50: '#6c71b0',
    500: '#1d3c8e',
    950: '#000000',
  },
}

SCSS

$custom: #1d3c8e;
$custom-light: #6c71b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3c8e",
  "rgb": {
    "r": 29,
    "g": 60,
    "b": 142
  },
  "hsl": {
    "h": 223.54,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.38634,
    "c": 0.14113,
    "h": 264.8
  },
  "luminance": 0.05446
}

Semantic roles & 50–950 ramp

primary

#1D3C8E

secondary

#BD9D4A

accent

#BA3FE9

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1D3C8E

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →